Sleeve-extracting device



Patented Nov. E4, 1925'.

tlhlllED PATENT OFFICE..

.AIM I). BROCHU, Oli' HARTFORD, CONNECTICUT.

SLEEVE-EXTRACTEETG- DEVICE.

Application .tiled September To all 'w71 omy zt may concern.'

Be it known that l. Ammin D. Becerril", a subject of Great Britain, and a resident ot Hartford. county oit Hartfordj State oit Connecticut, have invented certain new and uset'ul Improvements in a Sleeve-Extracting` Device, oit which the following is a specitication.

This invention relates to a device for er;- tractinp; sleeves or bushings t'rom members in which they are positioned. .Devices ot this sort in'd particular use in extracting contractible bearing; sleeves orbushings 'from the housings for the rear axles of automobiles, as explained hereinafter more in dctail.

rllhe object of the .invention is to provide a device of this sort having various features ot novelty and advantage.

A. more specific aim of the invention is to provide a sleeve extracting device with an improved catch adapted to take into a hole or opening provided in the wall of the sleeve, the construction and arrangement being)` such that the catch will properly .tit in the hole, and the catch, when extracting the sleeve, will not be damaged, nor scratch nor mu tilate the interior of the housing.

A further aim ot' the invention is t'o provide a device of this sort wherein the catch may be ot hardened steel and the catch is readily removable to permit repair thereof or a new catch to be substituted when the old one wears out.

Y still further object of the invention is to provide a sleeve extracting;l device which may be employed to extract sleeves or bushings of different diameters.

Gther objects will be in partohvious and in part pointed out more in detail hereinafter. i

The invention accordingly consists in the 'features oi construction, combination of elements and arrangement of parts which will be exemplied in the construction hereinafter set forth, and the scope ot the applicav tion of which will be indicated in the appended claims.

In the accompanying drawings, wherein l have shown, for illustrative purposes, one embodiment which the invention may take;

Figure l is a sectional view taken longi tudinally through my improved device, one end of which is shown as being positioned in and engaged with a bea-ring sleeve of a Ford automobile;

17, 1924:n SWIM). ITO. 733,222. 'i

Fig'. 2 is a. sectional view taken on line ot Fig'. l; and

Fig. 3 is a detail view showing; the connection between the spring` and the inner end o? the catch.

Referring to the drawings in detail7V A designates one end ot the pipe-like housing;` for the rear or live axle of an automobile such, for example. as is employed on a Ford car; B is the, usual flange secured to the housing; and C is a contractible sleeveor bushing tting-r within the end of the housing` and adapted to receive the roller bearinns (not shown) which support the live axle (also not shown). The sleeve C is longitudinally split as at o so that it may be contracted to vfacilitate its insertion in, and removal from, the housing. The sleeve C is provided with a hole 0 which is adapt- 75 ed to receive the catch of the extracting device. This sleeve is usually construe ed by stampingf or punching;a from a fiat sheet ot metal of suitable configuration and then rolling". the blank into cylindrical. form. S0

Reterrine now to my improved sleeve extractinlq` device., the same has a hollow or tubularhodv provided at its oppositerends with cylindrical portions 10 and lO'; respectively; the portion l0 beine oi4l greater 85 diameter than the portion l0. so thatv one end of the device may he employed. to entract sleeves oi one sive.4 and the other end ot the device. mav be employed to extract sleeves'o't another size: for example. .in the` present instance. the rio'ht. hand end l0 oic the device. reterrino; to l. may be em; ployed to extract bushinojs or sleeves from the housings of passenger automobiles and the left hand end 10 mav be employed to extract sleeves from the housinojs oi Ford trucks. The construction et' the opposite ends of the device is similar and, theretore` description ot one end is illustrative ot both. u

rllhe diameter ot the cylindrical portion i0 is. preferably. slierhtly less than the internal diameter ot the sleeve C `so that it may be readily inserted therein and to per mit contraction ot the sleeve when the device is turned. The cylindrical portion .'l() has, adiaeent its inner end, a radial opening' 1 1. in which a catch 12 is mounted for radial movement. Adjacent, theouter end of the cylindrical portion l() is a shoulder or shoulders adapted to engage the outer end of the sleeve C and thereby limit in ward movement of the portionV 1Q thereinto so that the catchmay be readily engaged in the hole o. In the present instance, the shoulders are provided by bosses 13, preferably cast integral with the body of the device.

' This catch 12 is, preferably, made of hardened steel so that it' will'stand upwell under the rather heavy strains to which it is subjected; The inner end of: the catch is enlarged or headed to limit: outward movement of the catch.- The inner face of the catch is-provided with ai transverse groove 16 which slidably receives a tongue 17 on the free endiof'. axspring 18. The otherend ofil the spring'- is detachably connected to thevbody of the device as, for instance, by m-eans of a screw or bolt: 19.l It will be noted that, since the spring 18 is readily removable and the catch is not iixedly secured to the spring, thecatch may be hardened before it' is positioned in the open` ing 11'. Also, the catch may be readily removedY and replacedv when it' is desir-ediI to repair or renew the saine,.features whichare of importance as the wear and* tear upon the catchiis considerable upon repeated use ofithev device. It will further be notedr that), owing to'the groove and tongue connection between Vthe catch and spring', the catch is held againsty rotation.

The outer end of the catch is provided with a port-ion 20 of reducedy diameter Substantially that of= the hole c in thebushing and of' ay height substantially equal to they thickness of the wallk of the bushing. The body portion of the catch is of greater diameter than that of the opening c so that there is a shoulder-21 which engages against the inside ofI the bushingabout the edge: of` the hole c', thereby preventingl the portion 20 from extendingy radially beyond the bushing and engage and rub against" the housing B. This is desirable because, should the catchfengage andirub against the housing, the partswouldfbemultilated andworn. In the present instance, the sleeve is contractedv when myV improved device is turned clockwise.l In order to-permit the catch to be'- disengaged from the hole c, the top'of the portion 2O at: its rear edge isbev-elled or inclined,I as: at 22;- thus, when the device is turned counterclockwise, the cam surface 22awillfengage theedge of the'hole c', resulting in the catch being cammedainwardly. As previouslyvstated, sleeves, sucht as indicated bythe letter C, areV formedl of' a; fiat sheet off-metall rolled into cylindrical shape. Whenthe sheet' is thusrolled, the hole c willbecome; slightly elliptical, and thetransversev` diameter of the inner endof the hole willbe slightly` less-V than the diameter of tlieiouter; end of the hole, which means `that 'the-:walls at-theoppositesides ofthe hole will.'be.:slightly.y inclined relative-to the axis ofthe hole, as-shown most clearly. in` Fig. 2. In order that the forward or operative edge of the portion 2O of the catch may have a substantial bearing against the edge of the hole, the portion 20 is slightly undercut so that the wall-thereof is inclined similarly to the inclined edge of the hole c.

The construction and operation of the catch 12 and the spring 18 associated with the cylindrical portion 10 are similar to the catch 1Qan'd spring 18.

The device is used in the following' man-` ner: After the live axle and its roller bearings have been removed from the sleeve C, the cylindrical end 10 is inserted into the latter until the bosses engage the othen end of the sleeve. The device is turned clockwise to engage the catch in the hole c. Thereafter, the device is rotated clockwise to contract the sleeve, and` at the same time an outward pull is exerted on the device to extract the'l sleeve from the housing. 1When it is desired to remove the device from the sleeve, this may be done by rotating the device counterclockwise. The device may be turnedfby means of a handle or rod- (not shown) passing through4 openings 25 inthe ends of the body.

As many changes could be made in the above construction and many apparently widely different embodiments of' this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the language used' in the following claims is intended to cover all of the generic and specific features ofy the invention herein described and all statements of the scope of the invention which, as a matter of langauge` mightbe said tofalltherebetWeen.

I claim as my invention:

1.A A bearing bushing extracting dev-ice including a body providedl with a cylindrical end having a radialopening, a'hardened metal catch mounted for radial movement in said opening, a spring having one end detachably abutting against the inner end ofsaid catch and holding thesame against rotation, and meansvfor removably securing the other end-'ofi said spring to saidv body, said spring being separable-fromv said catch for the purposes described.

2. A bearing bushing extracting; device having a bodyA provided' with av cylindrical end having av radial opening, a catch of hardened metal mounted forV radial' movement in said opening and having a; groove in its inner end, a. spring having one end slidablyengaging in saidl groove, and means for; removably securing the other end ofsaid spring to said body.

ing to prevent the reduced portion of 4the catch from protruding beyond the outer side of the bushing, said catch having a trans verse Slot in its inner end, and a spring mounted Within the cylindrical body and having a tongue on its free end slidably en gaging in the transverse slot of the catch to normally urge the catch outwardly and to hold the catch from turning in the open- 20 ing of the cylindrical body.

AIM D. BROGHU. 

